eh, just don't catch it on fire and problem solved. I think the foil would work out if you messed with it enough. then you could paint it with textured paint. i used old wood pellets that had gotten wet and turned to saw dust and mixed it in the primer for my stone pillars and it worked great. you could also use sand as well maybe even some of the chunkier sand. Now you have me curious, think ill experiment with some foil and paint to see what i could come up with.